Hi All,

I think that I may have found the reason that some Syncro driveshafts
vibrate while showing no apparent problems.
 While changing a U-joint on my '87 with a spare from an '86, I tried to
change the end with the rubber damper out as an entire unit (with the
U-joint still installed in the flanges).  After removing the 4 allen bolts,
I was suprised to find that there is a shaft that extends into the shaft
about 6".  It has "O"  rings and rides on bronze bearings and grease inside
the shaft.   After studying the shaft that had previously vibrated, I
noticed that the shaft had marks on it that indicated that it had worn out
the inner bearing.  I haven't heard about this feature before and suspect
that it is the source of the shaking.

Does anyone know if there is  anyone that repairs these that understands
them?  I suspect that most shops will just change out the U-joint and then
make excuses.
Also, does anyone know of a source for the U-joint?
thanks
Mark Rokus
'87 GL Syncro Westy
'87 GL Syncro
'86 Syncro (hanger Queen)
'81 Westy Aircooled
'82 Rabbit Diesel